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Annulares Nov. Gen. (Neuroptera, Myrmeleontidae, Palparini) Including Two New Species, with Comments on the Tribe Palparini1

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Annulares Nov. Gen. (Neuroptera, Myrmeleontidae, Palparini) Including Two New Species, with Comments on the Tribe Palparini1 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Denisia 13 | 17.09.2004 | 201-208 Antlions of southern Africa: Annulares nov. gen. (Neuroptera, Myrmeleontidae, Palparini) including two new species, with comments on the tribe Palparini1 M.W. MANSELL Abstract: A new genus and two new species of Palparini are described from southern Africa. - Three endemic species comprise the genus. They extend from western Namibia across the southern Kalahari region of Namibia, Botswana and South Africa, eastwards into the sandy areas of the northern Kruger National Park of South Africa. A five-toothed larva is known for one of the species, and the genus is further characterized by a prominent black stri- pe across the head and thorax, uniformly dark legs, clavate labial palpi with a slit-shaped sensory organ and a pro- minent gonarcal bulla in the males. Key words: Myrmeleontidae, Palparini, new genus, new species, larvae, southern Africa. Introduction ca. The central area of this distribution, the Kalahari sa- vannah of Namibia, South Africa and Botswana is inha- Southern Africa harbours the world's richest fauna of bited by P. annuiatus, while the other two species occupy Palparini (Neuroptera: Myrmeleontidae), with at least the western and eastern extremes of the distribution ran- 43 species in 8 genera, as well as several new and end- ge of the genus. The larva of P. annuiatus is known, and emic taxa. The generic placement of most Afrotropical is described here. species is largely unresolved, as the largest genus, Palpa- res RAMBUR 1842, comprises a polyphyletic assemblage of The contribution is concluded with a consideration taxa (MANSELL 1992a). A revision of the tribe is conse- of the tribe Palparini, and an evaluation of the status of quently in progress, and this paper highlights an enigma- the Palparinae. tic new genus comprising three species from the subre- Material examined is in the following institutions: gion. South African National Collection of Insects, ARC- Plant Protection Research Institute, Pretoria (SANC), MANSELL (1992a) identified key characters for the accession code NEUR; Transvaal Museum, Pretoria phytogeny and classification of the Palparini, and divi- (TMSA), accession code NEUT; Zoological Institute, ded the tribe into species-groups according to these cha- Lund University, Sweden (ZILS), accession code ZILS; racters. The groups were intended as tentative genera ai- Zoological Museum, Humboldt University, Berlin, Ger- med at resolving the confusion surrounding the genus many (ZMHB). Palpares. Subsequent research has confirmed the generic status of these species-groups, and three, Pamares MAN- Abbreviations: T = tergite, Ta = tarsomeres. SELL, Pamexis HAGEN and Palparettus NAVÄS (nyassanus- group sensu MANSELL 1992a) have been revised (MAN- SELL 1990, 1992b, 1996). The current paper treats the 1 This paper presents an opportunity to pay tribute to Univ.-Prof. Dr. species in the annulatus-group, as delimited by MANSELL Horst Aspöck, University of Vienna, on the occasion of his 65* birthday. (1992a). Prof. Aspöck has made an outstanding contribution to Neuropterology, and can justifiably be regarded as one of the most eminent neuropterists The new genus, described below, comprises three spe- of all time. He has also advanced the exploration and documentation of the rich southern Africa fauna through collaboration, publications and cies, Palpares annuiatus STITZ 1912, and two new taxa. joint expeditions with Prof. Dr. Ulrike Aspöck, Prof. Herbert Hölzel, The three species occur where deep sandy areas are pre- Prof. Dr. Peter Duelli, the late Dr. Peter Ohm and the present author. valent and extend from the Namib Desert of western Na- This paper and a striking new palparine species are consequently cordi- ally dedicated to Prof. Horst Aspöck in recognition of his personal and mibia, through the southern Kalahari and into the sand- scientific achievements, and for the inspiration he has provided over ma- veld of the northern Kruger National Park of South Afri- ny years. 201 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Fig. 2: Annulares aspoecki, holotype (forewing length 45 mm). Genus Annulares nov. gen. Fig. 1: Annulares annulatus(\wee RivierenJ (forewing length 45 mm). Type species: Pcdpares annulatus STITZ 1912; 108, hereby desi- gnated. Etymology: A combination of the specific epithet annulatus, the name of the type species, and Palpares. Gender: masculine. Diagnosis: Medium-sized nocturnal Palparini with robust heads and smallish eyes. Terminal labial palpome- res clavate, with a short slit-shaped opening to the sense organ. Body yellow and black with prominent median stripe across head and thorax. Legs uniformly dark-brown to black. Wings narrow; thorax with sparse pilosity. The known larvae have five-toothed mandibles. This is a group of closely related species that inhabit sandy areas of Botswana, Namibia and South Africa. Description: Size (mm). Body length male 48.0-70.0, female 36.0-47.0; forewing length male 34-0-47.0, fema- Fig. 3: Annulares lanner, paratype female (forewing length 52 mm). le 42.0-50.0; hind wing length male 39.0-45.0, female 41.0-47.0; antenna 5.0-8.0. Head: Vertex inflated; yellow with black median stri- pe over vertex and occiput; frons black, clypeus and la- brum yellow, palpi yellow and brown to black; terminal labial palpi clavate with short tip and slit-shaped ope- ning to sensory organ; antennae uniformly dark-brown to black. Thorax: Pronotum yellow with broad median black stripe, lateral margins black; long white setae present on anterior margin, black along posterior margin and la- terally. Mesothorax yellow with broad black median stri- pe; pleuntes and sternites uniformly black; soft white se- tae present dorsally and ventrally. Metathorax colour si- milar to mesothorax, scutellum yellow with very broad r r Fig. 4. La ,3 o* A ."j cres or"-j ;PP K y P'P' black median mark. 202 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Fig. 5-10: Annulores onnulotus. 5, male terminalia, lateral; 6, same ventral; 7, gonarcus and parameres, dorsal, 8, same caudal, 9, same lateral; 10, left labial palp. Scale bars = 1 mm (Fig. 5, 6), 0.5 mm (Fig. 7-10). Wings: Long, narrow, hyaline with blackish-brown narcal bulla is more prominently developed than in Pal- markings. Forewings with four diffuse transverse bands, par ellus. penultimate apical band hook-shaped. Hind wings with four bands or spots, a large basal spot situated close to re- Annuiares annulatus (STITZ) nov. comb. (Fig. current vein. 1,4,5-10,23) Legs: Uniformly dark-brown to black, slender, lon- Pdpares annulatus STITZ 1912: 108. Diagnosis: A distinctly yellowish species, with pro- gish, extending almost to posterior margin of T3, spurs minent brown markings on the wings and body. Wing and claws dark reddish-brown, Ta5 approximately same veins mainly yellow. Penultimate band in forewings dis- length of Tal-Ta4 combined. tinctly hook-shaped. Labial palpi short, slender with Abdomen: Black laterally and ventrally, broadly yel- short slit-shaped sensory opening. Larva with five man- low along dorsal midline. Male abdomen long, longer dibular teeth. than wings, ectoprocts yellow to black, gonarcal bulla Redescription: Size (mm). Length of body male 51.6 large, rounded, parameres prominent, shiny-black. (48.0-58.0), female 41.7 (36.0-48.0); forewing length Larvae: Known larvae with five mandibular teeth. male 43.7 (41.0-46.0), female 47.7 (44-0-55.0); hind wing length male 41.3 (37.0-44.0), female 46.6 (43.0- Remarks: Annuiares is most similar to Palparellus NA- 53.0); antenna 6.6 (5.0-8.0) (n = 20). VÄS, but is clearly distinguished by the median black stri- pe over the head and thorax, the prominently inflated Head: Vertex inflated, yellow with black median stri- vertex and smaller eyes than Palparellus. The labial palpi pe over vertex and occiput; frons black, clypeus and la- have a slit-like sensory opening on the palpimacula and brum yellow, palpi yellow ventrally, brown dorsally, ter- the palpi are clavate with short acute tip (spindle-shaped minal labial palpi (Fig. 10) short, clavate with short tip in Palparellus with round or oval sense organ). The male and small slit-shaped opening to sensory organ; antennae abdomen is relatively long in Annuiares, while the go- uniformly black. 203 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Fig. 11-16: Annulores ospoecki. 11, male terminalia, lateral; 12, same ventral; 13, gonarcus and parameres, dorsal, 14, same caudal, 15, same lateral; 16, left labial palp. Scale bars = 1 mm (Fig. 11, 12), 0.5 mm (Fig. 13-16). Thorax: Pronotum yellow with broad median black Distribution: Endemic to the Kalahari savannah of stripe, lateral margins black; long white setae present on Namibia, Botswana and South Africa, extending from anterior margin, black along posterior margin and la- southeastern Namibia, across southern Botswana and terally. Mesothorax yellow with broad black median stri- northern South Africa to Langjan Nature Reserve in pe, pleurites and stemites uniformly black; sparse long Limpopo Province. It is common in the Kalahari Gems- white setae present dorsally and ventrally. Metathorax si- bok National Park. milar to mesothorax, scutellum yellow with very broad Larva: Characterised by five mandibular teeth, white black median mark. body, with red on head, thorax and abdomen and promi- Wings: Long, narrow, hyaline with brown markings, nent brown marks along abdomen. darker in hind wings. Forewings with four diffuse trans- Size (mm): Body length (including mandibles) first verse bands, penultimate apical band distinctly hook- instar 12.5 (12.0-13.0), second instar 17.2 (16.0-19.0), shaped. Hind wings with four prominent bands or spots, third instar 23.2 (20.0-27.0); body width first instar 3.7 a large basal spot situated close to recurrent vein. (3.5-40), second instar 5.4.
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